External Router

Question 1

What device is used to forward data between networks and block networks, subnets, and specific IP addresses?

Answer 1

Router

Question 2

Which basic router command displays a list of all commands available?

Answer 2

?

Question 3

Which basic router command can be put in front of any command to undo it?

Answer 3

no

Question 4

Which basic router command displays the current routing table?

Answer 4

Router # show ip route

Question 5

Which basic router command tests connectivity to an IP address?

Answer 5

Router # ping x.x.x.x

Question 6

Which basic router command switches to configuration mode?

Answer 6

Router # config t

Question 7

Which basic router command shows layer 3 interface information such as applied access-lists?

Answer 7

Router # show ip interface

Question 8

Which basic router command creates a standard ACL?

Answer 8

Router(config)# ip access-list standard 1

Question 9

Which basic router command creates a standard ACL entry to permit or deny a source IP address or range?

Answer 9

Router(config-std-nacl)# {permit | deny} src_ip wildcard_mask

Question 10

Which basic router command creates an extended ACL?

Answer 10

Router(config)# ip access-list extended 101

Question 11

What is used to identify the network a device belongs to and contains a series of leftmost contiguous “1” bits used to identify the network portion of an IP address?

Answer 11

Subnet Mask

Question 12

What is used to identify the network a device belongs to and contains a series of the leftmost contiguous “0” bits used to match the network portion of the IP address?

Answer 12

Wildcard Mask (or Reverse Mask)

Question 13

(T/F) Standard ACLs are concerned with the source IP address of the packet; the destination is not considered.

Answer 13

True

Question 14

Which standard ACL command drops all packets that match the specified source address?

Answer 14

Deny

Question 15

Which standard ACL command allows packets that match the specified source address to flow through the interface?

Answer 15

Permit

Question 16

Whitelisting relies on using which ACL command?

Answer 16

Permit

Question 17

Blacklisting relies on using which ACL command?

Answer 17

Deny

Question 18

Which standard ACL keyword specifies any host? This is the same as using an IP address and wildcard mask of 255.255.255.255

Answer 18

Any

Question 19

Which standard ACL keyword specifies an exact host match? This is the same as specifying a wildcard mask of 0.0.0.0

Answer 19

Host

Question 20

Extended ACLs filter packets based on a combination of what?

Answer 20

• Source IP address, network, or port
• Destination IP address, network, or port
• Protocol type (TCP, UDP, ICMP, EIGRP, OSPF, etc.)

Question 21

Which extended ACL command allows or drops all packets that match the specified destination IP address?

Answer 21

Destination

Question 22

Which extended ACL command matches the network portion of the destination IP address?

Answer 22

Destination-wildcard

Question 23

Which extended ACL command matches the port in TCP or UDP?

Answer 23

Destination-port

Question 24

Which extended ACL command verifies whether either the RST or ACK bit is set. If either of these bits is set, the packet is part of a previously established connection. This can be used to restrict TCP responses to one direction when sessions are initiated from the opposite direction.

Answer 24

Established (TCP only)

Question 25

Which extended ACL command enables logging of packets that match the deny or permit statements?

Answer 25

log

Question 26

What is the official Air Force tool for fault management on the Air Force Enterprise network?

Answer 26

EMC Ionix